Window-sash fastener



R. P. LITTLE.

WINDOW SASH FASTENER. APPLICATION FILED DEC-23, 1920.

1,395,047. Patented Oct. 25, 1921.

Balk/i j Zilf/e UNITED STATES PATENT OFFICE.

I WINDOW-SASH ras'rnnnn.

Specification of Letters Patent. Patented Oct. 25, 1921 Applicationfiled December 23, 1920. Serial No. 432,651.

To all whom it may concern:

Be it known that I, ROBERT PJLITTLE, a citizen of the United States,residing at C0- lumbus, in the county of Franklin and State of Ohio,have invented certain new and useful Improvements in Window-SashFasteners, of which the following is a specification.

Thi invention relates to improvements in window sash fasteners, and hasfor its object to provide a simple, inexpensive and efficient fasteningdevice adapted to be employed in combination with the upper and lowersashes of a window construction for the purpose of locking said sashestogether and to prevent relative movement thereof.

In carrying out the invention, use is made of a bearing plate which isadapted to be rigidly secured to the upper surface of a lower windowsash, and to which is pivotally connected a vertically oscillatablefastening arm, the latter being provided with a locking extremitycapable of entering a recess in' one of a plurality of keeper plateswhich are adapted to be rigidly secured to the upper sash of the windowconstruction,

the construction being such that when thearm is oscillated so that itslocking extremity is received within the recess of one of said keeperplates, the two sashes will be locked together and relative movementtherebetween effectually prevented.

Another object of the invention resides in providing the outer end ofthe fastening arm with a device for positively locking such arm inconnection with any one of the keeper plates, said device comprising aresilient depressible finger which is so disposed that when the lockingextremity of said arm initially enters the recess of the keeper plate,said finger will contact with a beveled surface formed with the keeperplate, and will be depressed so as to be crowded downwardly against theupper surface of the locking extremity of the fastening arm, wherebywhen said arm is fully positioned within said recess, said finger willregister with a pocket provided in the keeper plate in communicationwith its recess, the arrangement being such that accidental releasingmovement on the part of the arm will be precluded, or in other words,said arm cannot be moved to an unlocking position until after the fingerhas been depressed manually to release the same from cooperation withsaid pocket. A further object of the invention resides in forming thelocking extremity with a downwardly beveled lower surface, which isdesigned for cooperation with a correspondingly beveled surface providedupon the lower wall of the bottom of said recess, the arrangement beinsuch that the locking extremity will be se curely held within saidrecess so that the sashes cannot be pried laterally to disengage thelocking extremity from its position within the-recess.

Other objects of the invention reside in producing a sash fastener whichis convenient and simple to operate, of but few parts and not likely tobecome out of order, and formed in such manner as to constitute a sturdyand staunch construction which may be effectively used in resistingunnatural efforts to relatively operate the window sashes.

For a further understanding of the invention, reference is to be had tothe following description and to the accompanying drawing, in whichsimilar characters of reference denote like and corresponding partsthroughout the several views thereof.

In said drawing:

Figure 1 is a fragmentary perspective view of a pair of window sashesand illus trating the application of the sash fastener comprising thepresent invention thereto.

Fig. 2 is a vertical sectional view taken through the sash constructionand illustrating the fastener in side elevation.

Fig. 3 is an enlarged detail sectional view, illustrating moreparticularly the relationship between the locking elements of thefastener, and,

Fig. 4- is a detail vertical sectional view taken along the line 44 ofFig. 3.

Referring more particularly to the details 'of the invention, thenumeral 1 designates generally a standard form of window construction,the type commonly employed in conjunction with habitable dwellings. Asusual, this construction includes spaced sash guides, in which aremounted for vertical relative movement upper and lower window sashes 2and 3 respectively. In combination with these sashes, use is made of afastening structure 4 which is designed with the view of firmly lockingsaid sashes together and to prevent the latter from being forced orimproperly raised or lowered and also with the view of performing theobjects above recited.

its p e err d form, the fastening structure 4 makes use of a bearingplate 5, which i is preferably located upon the upper surface of thelower sash 3 and at each side of the latter, only one of such plates,however, being illustrated. The plate 5 includes a circular base 6,which is securely connected with. the upper surface of the lower sash bymeans of suitable fastening.

elements, such for example, as ordinary wood screws 7. Arising from theplate 5 capable of oscillating vertically thereabout is a fastening arm10, the construction of which being such that its lower end will beprovided with a bore capable of receiving the pin 9 and to be capable offreely rotating thereabout. The arm extends angularly and outwardlytoward the upper sash 2 and may be of any suitable length, however, itsupper portion terminates in a relatively offset locking extremity ornose 11 which, when the arm is swung to assume a substantiallyuprightposition, will be received within an open-sided recess 12 provided in locking or keeper plates 13.

The keeper plates '13, as shown, are mounted upon the inner surface ofthe vertical rails 14: of the upper sash 2 and are locked in verticalalinement and spaced relationship upon both ofthe rails of said uppersash, whereby upon moving the sash relatively, the locking extremity 11of the arm10 may be slidably positioned within any one of the recessesof said keeper plates so that said sashes may be locked at any desiredposition of relative adjustment. The

" keeper plates are preferably formed from metal and are-secured inposition upon the V upper'sash by means of one or more securing screws15, which operate to securely connect' said plates 13 in applied andproperly distributed positions upon the upper sash. The recess 12provided in said keeper plates have their open sides disposed toward theinner portions of the sash, whereby upon oscillating the arm 10, theextremity 11 thereof will be permitted to enter said recesses. It willbe observed that the under portion or surface of the extremity 11 isdownwardly and outwardly beveled as at 16, and similarly, the lower wallof each of the recesses 12, is upwardly and inwardly beveled as at 17 tocorrespond with the beveled face of the'extremity 11 when the arm 10 isin an active locking position. By this construction a double lockingeffect is secured, t'o-wit, the sashes are prevented a from being movedvertically and also'laterally, a feature which prevents thesashes frombeing pried apart to remove the lockmg extremity 11 from its positionwithin the recess 12, a condition which might be effected if the beveledsurfaces 16 and 17 were not provided.

Under certain circumstances, it has been found advisable to positivelylock the extremity '11 within the keeperplate recesses 12.. Mainly, thisis done in order to prevent the parts from becoming accidentallydisengaged, and to render the operation of the lock certainandeffectual. To this end, the upper or outer-surface of the'arm 10 isprovided with a leaf spring-18, or its equivalent. This spring is bentso-as to produce a' base portion 19,-which is fastened by means of ascrew 20 to the arm 10. "From its point of connection with the arm 10,the spring is bent upon itself as at 21-so asfto produce an outwardlyextending resilient portion 22,

which terminates in a locking finger- 23..

lformally, by reason of the inherent resiliency of the spring 18, thefinger 23 1s maintained in spaced relation; from the extremity '11,however, when the arm 10 is swung to assume'an'active'locking positionand initially enters the open side of one of the recesses 12, the finger23 will contact with a sloping or beveled surface 24 provided inconjunction with saidrecess. This engagement between the finger 23 andthe surface 24 results in cr'owdingsaid finger. downwardly into thedepression'25 provided in the extremity 11, while the arm 10 is beingdepressed toward its final locking position. hen-this final lockingpositionis reached, the finger 23 moves upwardly, by reason of theresiliency of the spring, and will be confined and positioned within apocket 26, formed in each of said plates in communication with therecesses 12 thereof; The registr'ation'of the finger2-3 and the pocket26 is automatically effected by the contacting of the outer side of thearm with the closed end of the recess 12. Manifestly,'by thisconstruction, it will be impossible for the locL- ing members to becomeaccidentally separated, since such separation can onlybe effected afterthe portion 22 has been manually depressed to effect the release of thefinger 23. "Nhen'this is done, the arm may be swung inwardly-of the sashconstruction so as to clear the plates 13, hence permitting of relativemovement on the part of the V sashes. It will be observed that the arm10 is of suilicient length so that its locking extremity will cleartherail construction 1-1- of 'tener is formed of but few and simpleparts,

may be conveniently and easily operated and will serve to resist to theutmost extraneous efforts to effect the raising and lowering of itscorrelated sashes.

In particular fields, certain minor features of construction,combination and arrangement of parts may necessitate deviations from theexact structure above described, however, it will be understood thatsuch alterations may be hereinafter effected provided that the same fallwithin the scope and intent of the following claims.

What is claimed is:

1. A sash fastener comprising a base plate adapted to be carried by theupper surface of the lower of a pair of window sashes, a fastening armpivotally connected with said base plate and capable of swinging on avertical arm, a locking extremity provided upon the outer end of saidarm, a keeper plate adapted to be carried by the upper of said sashes,and said keeper plate'including an ,open sided recess capable ofreceiving and retaining the locking extremity of said arm.

3. A sash fastener comprising a base plate formed to be secured to theupper surface of the lower of a pair of window sashes, a fastening armhaving its lower portion pivotally connected to said plate, whereby saidarm may be swung vertically, an offset locking extension provided uponthe outer end of said arm, a plurality of keeper plates arranged to becarried in vertically spaced relationship by the side rails of the upperof said sashes, and said keeper plates being provided with open sidedrecesses capable of selectively receiving the locking extremity of saidarm when the latter is swung to assume a locking position.

3. A sash fastener comprising a vertically osoillatable arm constructedto have its lower end pivotally connected with the upper surface of thelower of a pair of sashes, a looking extremity provided upon the outerend of said arm, and the keeper plate having an open sided recesscarried by the upper of said sashes, said recess being capable ofreceiving the looking extremity of said arm when the latter is movedupwardly and outwardly to hold said sashes in locked relationship.

4. A sash fastener comprising a vertically movable locking arm, apivotal connection between the lower end of said arm and the upper partof the lower of a pair of sashes, an offset locking extremity providedupon the outer end of said arm, said extremity having its lower surfacedownwardly and outwardly beveled, a keeper plate arranged to be fixed tothe side of the upper of said sashes, said keeper plate being providedwith an open sided recess capable of receiving the locking extension ofsaid arm, and the lower wall of said recess being upwardly and inwardlybeveled to conform with the inclination of the bottom surface of saidextension.

5. A sash fastener comprising an arm arranged to be pivotally carriedfor vertical swinging movement by the upper surface of the lower of apair of sashes, a locking extension provided upon the outer end of saidarm, a rib projecting downwardly from the lower portion of saidextension, a keeper plate arranged to be carried by the side of theupper of said sashes, said keeper plate being provided with an opensided recess capable of receiving said locking extension, and a secondrib provided upon the lower wall of said recess and cooperative with therib of said locking extension to prevent lateral movement between saidarm and plate.

6. A sash fastener comprising an arm arranged to be pivotally carried bythe upper surface of the lower of-a pair of window sashes, a lockingextension provided upon the outer portion of said arm, a keeper platearranged to be fixed to the side of the upper of said sashes, saidkeeper plate being provided with an open sided recess capable ofreceiving said locking extension, and a resilient member carried by theouter end of said arm and cooperative with said keeper plate topositively lock said arm in connection with said plate.

7. A sash fastener comprising an arm arranged to be pivotally carried bythe upper surface of the lower of a pair of window sashes and capable ofbeing vertically oscillated,a locking extension provided upon the outerend of said arm, a keeper plate fixed to the upper of said sashes, saidplate being provided with an open sided recess and a communicatingpocket, and a resilient member mounted upon the outer end of said armand capable of being seated within said pocket to prevent movement onthe part of said arm when said locking extension is fully positionedwithin said recess.

8. A sash fastener comprising a pivotally mounted arm arranged for.vertical movement upon the upper surface of the lower of a pair ofwindow sashes, a lateral extension integrally formed with the outer endof said arm, a keeper plate having a recess formed therein, said recessbeing capable of receiving said locking extension to hold said sashesagainst relative movement, a resilient member carried by the outer endof said arm, and a beveled surface provided on said plate contiguous tothe entrance of said recess, said beveled surface being disposed toengage with said resilient member when said arm is swung to assume anactive locking position, whereby said member will be depressed, and saidplate being further formed with a pocket disposed adjacent to the innerend of said beveled surarranged to be carried by the upper surface ofthe lower of a pair of sashes integral apertured ears 1310160i3111gupwardly from said base plate, a horizontal pin secured in the aperturesof said ears, a lockingarm having its lower end provided with a borearranged to receive said p111, whereby said arm Inaybe osclllatedVertically, said arm being angularly and outwardly inclined andhavingrits outer end terminated in a lateral locking extension, a keeperplate having an open sided recess arranged to receive said lockingextension when said armris swung upwardly and outwardly, and a resilientfinger carried by the outer end of said arm and cooperative with apocket provided in said keeper plate for 1 holding said arm againstundue movement. 7 I

f In testimony'whereof I aflix my signature.

ROBERT P. LITTLE.

